Leaf-sight for firearms



as zaaso F.F.BURTON.

-LEAF SIGHT FOR FIREARMS.

APPLICATION FILED NOV-1.1919.

Patented Apr. 27, 1920.

UNITED STATES PATENT OFFICE.

FRANK F. BURTON, 0F MOUNT CARMEL, CONNECTICUT, ASSIGNOR TO WINCHESTERREPEATING' ARMS 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

LEAF-SIGHT FOR FIREARMS.

Specification of Letters Patent.

Patented Apr. 2'7, 1920.

To all whom it may concern Be it known that I, FRANK F. BURTON, acitizen of the United States, residing at Mount Carmel, in the county ofNew Haven and State of Connecticut, have invented a new and usefulImprovement in Leaf- Sights for Firearms; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings andthe characters of reference marked thereon, to be a full, clear, andexact description of the same, and which said drawings constitute partof this application, and represent, 1n-

Figure 1, a View in rear elevation of a leaf-sight embodying myinvention and showing the leaf in its elevated position.

Fig. 2, a view thereof in side elevation.

Fig. 3, a detached view in rear elevation of the slide-body.

Fig. 4:, a plan view thereof.

Fig. 5, an end view thereof.

Fig. 6, a detached view of the slide assembly-screw.

Fig. 7, a detached view in rear elevation of one of the interchangeablesight-plates.

Fig. 8, a reverse plan view thereof.

Fig. 9, a detached view in rear elevation of another interchangeablesight-plate.

Fig. 10, a corresponding view of another interchangeable sight-plate.

Fig. 11, a corresponding view of another interchangeable sight-plate.

Fig. 12, a reverse plan view thereof.

Fig. 13, a reverse plan View of still another form which theinterchangeable sightplate may assume.

My invention relates to an improved leafsight for firearms, the objectbeing to provide a simple and convenient sight of the type described,with interchangeable sightplates to permit a given leaf-sight fixture tobe adapted by the interchange of a series of specialized sight-plates tomeet the idiosyncrasy or personal equation of the user ofthe arm.

With these ends in view my invention consists in a leaf-sight providedwith a series of interchangeable sight-plates formed at their respectiveends with positioning flanges and held in place by a single centrallyarranged slide assembly-screw. My invention further consists in certaindetails of construction as will be hereinafter de scribed and pointedout in the claims.

In carrying out my invention as herein shown, I employ a leaf-sightcomprising a sight-base 2, a leaf 3 turning on a pivot l, and aleaf-spring 5, all of standard construction. Upon the leaf 3, I mount aslide body 6 having a central block 7 which enters the longitudinalopening 8 in the leaf 3. The left hand side of this block is formed withsegmental screw threads 9 which are engaged by an elevation screw 10furnished at its upper end with a knurled finger button 11 located in aslot 12 in the outer end of the leaf 3.

The slide-body 6 is formed at its ends with rearwardly extending arms 13formed with oppositely located positioning-slots or notches 14respectively receiving positioning-flanges 15, located at the ends of aseries of interchangeable sight-plates 16 which will vary in number andin sighting details according to requirements. Each of these plates isformed with a central screw-hole 17 receiving the slide assembly-screw18 which enters a horizontal screw-hole 19 in the block 7 of theslide-body 6, the said screw-hole 19 being located centrally between thesaid notches 14:.

To interchange the sight-plates, it is only necessary to remove thescrew 18 and replace the plate by another, using the same screw forsecuring it in place.

The differentiation of the sight-plate 16 will depend upon theidiosyncrasy of the user and the character of the use. Thus, thesight-plate 16 of Fig. 1, is formed with a small sight-opening 20 whilethe sightplate 16 of Fig. 7 is formed with a larger sight-opening 21.The sight-plate 16 of Fig. 7 is also furnished with an upturnedbattle-sight 22 which, it is to be understood, is used only in thedepressed position of the sight-leaf 3. Fig. 9 is a detached view of thesight-plate 16 of Fig. 1. The sightplate 16 of Fig. 10 has a largersight-opening 23 than is shown in any of the other sight-plates. Thesight-plate 16 of Figs. 11 and 12 is peculiar in having its battlesight24 upturned from its upper end while the sight-plate 16 of Fig. 13 ispeculiar in having a notched battle-sight 25. Of course, thesight-plates shown and described are only illustrative of some of theinterchan eable sight-plates that may be employed. In respect of theirsighting features, they will be differentiated, but in respect of theirassembly features they will be alike in being provided at theirrespective ends with positioning-flanges and with a central screwholefor the reception of the slide assemblyscrew.

I claim:

1. A leaf-sight for firearms, comprising a sight-base, a pivotal leaf, avertically adjustable slide-body mounted thereupon and formed at itsrespective ends with positioning members of the slide-body, one or moreof the said sight-plates being provided with up-turned battle-sights;and means for seguring the said sight-plates to the slide- 3. Aleaf-sight for firearms, comprising a sight-base, a pivotal leaf, avertically adjustable slide-body mounted thereupon and formed at itsrespective ends with positioning-members and with a centrally locatedscrew-hole, a series of interchangeable differentiated sight-plates,each formed at its respective ends with positioning-members and with ascrew-hole located centrally between its ends, and a screw passingthrough the said screw-holes for securing the plates to the body.

,7 In testimony whereof have signed this specification in the presenceof two subscribing witnesses. I

FRANK F. BURTON. Witnesses: 4

DANIEL I1. VEADER, ERIK S. PALMER.

